arch/arm/setjmp_a32.S

1 /* SPDX-License-Identifier: BSD-3-Clause */
3  * Copyright (c) 1994-2009  Red Hat, Inc.
18  * software without specific prior written permission.
20  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
29  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
48 #define SIZE(x) .size SYM(x), . - SYM(x)
54 	.section .note.GNU-stack,"",%progbits
56 /* Arm/Thumb interworking support:
60    in both interworked and non-interworked environments as well as with
65 	(We know that we are in ARM mode and returning to an ARM mode caller).
79    If we are running using the APCS-26 convention however, then we never
82    returning to a Thumb caller - the Thumb does not support APCS-26.
85    just switch into ARM mode and then drop through into the rest of the
89    For Thumb-2 do everything in Thumb mode.  */
92 /* ARMv6-M has to be implemented in Thumb mode.  */
109 	/* Restore callee-saved low regs.  */
177 #else /* Arm */
198 /* --------------------------------------------------------------------
200    -------------------------------------------------------------------- */
204 	/* Save all the callee-preserved registers into the jump buffer.  */
207 	stmea		a1!, { v1-v7, fp, ip, lr }
209 	stmea		a1!, { v1-v7, fp, ip}
224 	 * As ftrace is supported in ARM mode only, so hardcode jmp_buf
237 /* --------------------------------------------------------------------
239    -------------------------------------------------------------------- */
248 	 * As ftrace is supported in ARM mode only, so hardcode jmp_buf
270 	ldmfd		a1!, { v1-v7, fp, ip, lr }
273 	ldmfd		a1!, { v1-v7, fp, ip }